{"product_id":"allen-bradley-1746-nr4-4-channel-rtd-resistance-input-module","title":"Allen-Bradley 1746-NR4 4-Channel RTD Resistance Input Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1746-NR4 is a four-channel RTD\/Resistance analog input module for the SLC 500 family. It plugs into a backplane and provides four isolated RTD\/resistance input channels, enabling direct connection of resistance-based sensors to a Rockwell Automation controller. The module is designed for the SLC 500 ecosystem and integrates with the 1746 backplane to deliver channel-by-channel measurements that the CPU can read as digital values. A set of five LEDs—one for the module status and one for each channel—offers at-a-glance health and input status. This NR4 module reads resistance-type sensors and is commonly used for temperature monitoring and other RTD-resistance measurements in industrial automation, HVAC, and process control environments where four independent RTD signals must be read simultaneously. It supports backplane isolation and maps each channel to a PLC address within the SLC 500 I\/O tree, enabling straightforward integration with existing Rockwell workflows. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658971447598,"sku":null,"price":319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_5954b43a-2c90-4680-abcb-40865d3b4f28.jpg?v=1769526166","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1746-nr4-4-channel-rtd-resistance-input-module","provider":"PLG Automation ","version":"1.0","type":"link"}